Question 1002752
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For 1, you left the variable out of the high order term.  Chalking that up to a simple typo, you have it technically correct.  However, I would have expressed my answer as:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ -36x^2\ +\ 21x\ -\ 1]


keeping with the convention of writing the terms in descending order.


2 is spot on IF you were not required to express the rational function result in the form of *[tex \Large q(x)\ +\ \frac{r(x)}{d(x)}]


3.  How you got from


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ -(-4x^2\ +\ x\ +\ 5)\ +\ 2]


to


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 4x^2\ -\ x\ -\ 5\ +\ 5]


I cannot fathom.


Should have been


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 4x^2\ -\ x\ -\ 5\ +\ 2]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 4x^2\ -\ x\ -\ 3]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
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